Budget category &2 in program type &1 could not be deleted

Message type: E = Error

Message class: AP - Investment program messages

Message number: 130

Message text: Budget category &2 in program type &1 could not be deleted



What causes this issue?

When you tried to delete budget category &V2& in program type &V1&, the
system found that it is already being used in planning or budgeting of
an investment program.
The entry cannot be deleted.

Error message extract from SAP system. Copyright SAP SE.